お問い合わせ窓口 — 比率計算ツールのサポート・ご意見ご相談窓口
計算結果のエラー報告、機能追加の要望、運営に対するお問い合わせなどがございますか？ 以下のフォームに入力していただければ、24時間以内に確認の上ご連絡いたします。
Math & Formula Inquiries
Questions regarding calculation steps, GCD algorithms, cross-multiplication proofs, or unit conversions.
Feature Requests & Ideas
Suggest a new ratio calculator, custom unit presets, or user interface improvements for our toolkit.
Prompt Response Time
Our editorial and technical team reviews all incoming inquiries and replies within 24–48 business hours.
または、直接メールでお問い合わせください： hello@ratiocalculator.net
Direct Contact & Support Guidelines
Prefer to write to us directly from your email client? You can send an email anytime to hello@ratiocalculator.net.
Frequently Asked Questions
Are all 38 ratio calculators free to use?
Yes. Every calculator on 比率計算ツール is 100% free with no registration, accounts, or subscription fees.
Can I suggest a specialized calculation tool?
Absolutely. If your field requires a specific ratio formula (for engineering, chemistry, baking, or finance), send us the formula details and we'll evaluate adding it.
Can educators use these tools in class?
Yes. Teachers, students, and academic institutions are welcome to use our tools, step-by-step breakdown guides, and ブログ freely.
How is my personal information protected?
We only use your submitted email to answer your inquiry. We never share or sell contact information. Read our プライバシーポリシー for full details.